Asset Impairments and Unusual Items	9 Months Ended
Sep. 30, 2012
Asset Impairments and Unusual Items	11. Asset Impairments and Unusual Items (Income) expense from divestitures, asset impairments and unusual items — During the third quarter of 2012, we recognized impairment charges aggregating $21 million, relating in large part to (i) the impairment of a note receivable from an entity that we invested in that is now being liquidated (see “Equity in net losses of unconsolidated entities” discussion below), (ii) the impairment of certain related assets due to our decision not to use or develop those assets and (iii) the impairment of an oil and gas well as a result of projected operating losses that caused us to write-down the carrying value of the oil and gas well to its estimated fair value. These charges are included in our “Other” operations in Note 8. During the second quarter of 2012, we recognized impairment charges of $34 million, relating primarily to two facilities in our medical waste services business as a result of projected operating losses at each of these facilities. We wrote down the carrying values of the facilities’ operating permits and property, plant and equipment to their estimated fair values. Our medical waste services business is included in our “Other” operations in Note 8. During the third quarter of 2011, we recognized impairment charges relating to two facilities in our medical waste services business, in addition to the two facilities impaired in the second quarter and discussed above as a result of the closure of one site and as a result of continuing operating losses at the other site. We wrote down the net book values of the sites to their estimated fair values. Equity in net losses of unconsolidated entities — During the third quarter of 2012, we recognized a charge of $10 million related to a payment we made under a guarantee on behalf of an unconsolidated entity accounted for under the equity method. Other income (expense) — During the third quarter of 2012, we recognized an impairment charge of $14 million relating to an other-than-temporary decline in the value of an investment accounted for under the cost method. We wrote down the carrying value of our investment to its fair value based on other third-party investors’ recent transactions in these securities, which are considered to be the best evidence of fair value currently available. This charge is recorded in “Other, net” in our Condensed Consolidated Statement of Operations.

Asset Impairments and Unusual Items

9 Months Ended

Sep. 30, 2012

11. Asset Impairments and Unusual Items

(Income) expense from divestitures, asset impairments and unusual items — During the third quarter of 2012, we recognized impairment charges aggregating $21 million, relating in large part to (i) the impairment of a note receivable from an entity that we invested in that is now being liquidated (see “Equity in net losses of unconsolidated entities” discussion below), (ii) the impairment of certain related assets due to our decision not to use or develop those assets and (iii) the impairment of an oil and gas well as a result of projected operating losses that caused us to write-down the carrying value of the oil and gas well to its estimated fair value. These charges are included in our “Other” operations in Note 8.

During the second quarter of 2012, we recognized impairment charges of $34 million, relating primarily to two facilities in our medical waste services business as a result of projected operating losses at each of these facilities. We wrote down the carrying values of the facilities’ operating permits and property, plant and equipment to their estimated fair values. Our medical waste services business is included in our “Other” operations in Note 8.

During the third quarter of 2011, we recognized impairment charges relating to two facilities in our medical waste services business, in addition to the two facilities impaired in the second quarter and discussed above as a result of the closure of one site and as a result of continuing operating losses at the other site. We wrote down the net book values of the sites to their estimated fair values.

Equity in net losses of unconsolidated entities — During the third quarter of 2012, we recognized a charge of $10 million related to a payment we made under a guarantee on behalf of an unconsolidated entity accounted for under the equity method.

Other income (expense) — During the third quarter of 2012, we recognized an impairment charge of $14 million relating to an other-than-temporary decline in the value of an investment accounted for under the cost method. We wrote down the carrying value of our investment to its fair value based on other third-party investors’ recent transactions in these securities, which are considered to be the best evidence of fair value currently available. This charge is recorded in “Other, net” in our Condensed Consolidated Statement of Operations.